Created by StemPy LabThe current in a coil of inductance H varies with time as , with in A and in s. What is the size of the self-induced emf at s?
← All Quizzes
← A long wire is wound into a solenoid of length l and radius r, with evenly spaced turns. Its inductance is L. The same wire is wound again into a solenoid of the same length l, with evenly spaced turns, on a former of half the radius. What is the new inductance?The current in a primary coil is reversed from +3.8 A to -3.8 A in 0.043 s. A nearby secondary coil has a mutual inductance of 23 mH with it. What is the size of the average emf in the secondary? →
Discussion (0)
Log in to join the discussion.
Loading…